ZKSwap is a good layer-2 DEX Exchange. You need ETH in your wallet to deposit the amount in Layer 2 on ZKSwap making sure to allow for gas fees, if you have 50ZKS or 200 USDT token you can swap any token without any fees.
Also something that i come across is that when connecting to metamask on android you will need to use the metamask built in browser otherwise your be stuck with install metamask error on normal browser.
Overall experience 8/10 Good potential project